Color-scale.



No. 709,328, Patented Sept. I6, 1902.

C. J JURGENSEN. CULOR SCALE.

(Application filed Feb. 17, 1902.) 1 (No Model-J 2ORANGEYELLOW 1/ 1 11 1/ 1/ 1/ 1/ 1/ YELL G EEN 3 YELLOW ORANGE l 11 11 11 11 11 11 1 1,

' '11 1 11 11 l/ I/ 11 11' l/ 1 -5'RED ORANGE 1/ 1 1/ 1/ 11 11 1/ 11 1 6ORANGE,REDI 11 1 1 1 11 1/- /1 1/ 1/ 7RE 1,114,111

8\/|OLET RED- 7 1, 11 1-11 1,

QREDVIOLET '1 1, 11 11 '11 @VIOLE 1 1 1, 1 //BLUE\/|OLET I 1, 11 11 11,

104m BLUE 11 11 1 1, 11

13BLUE MQREEN BLUE MB E QiEEN /5 GREEN {7}ELLM/QREEM /8GREEN yELLow a fee UNITED STATES PATENT Demon.

CHARLES .I. JORGENSEN, OF. MILWAUKEE, WISCONSIN.

COLOR-SCALE.

erncIFIoA'rIoN forming part er Letters Patent No. 709,328, dated September 16, 1902.

Application filed February 1'7, 1902. Serial No. 94,484:- (No model. I

a which the following is a specification.

.My invention relates to color-scales; and the object of the same is to construct a rational scale of tertiary colors containing all possible important shades of color which can be obtained by mixing the three primary colors yellow, red, and blue. To obtain these shades directly by the mixing of the primary colors is impossible and only leads to a chaos of colors which cannot be arranged in any system which is of use to artisans as a guide in matching or dyeing.

The system used by me is fully described in this specification and claimed, and illustrated in the accompanying drawing, form: ing a part thereof, in which the figure is a table showing the list of secondary and primarycolors and a rational scheme for arrangingythe tertiary colors obtained by mixing in pairs the secondary colors and the primaries.

In this specification when I speak of secondary colorsl I mean those obtained by mixing two primary colors, and when I speak of tertiary colors I mean those containing all three primary colors.

In the table shown in the drawing there is a wide column to the left which is designated by the letter A. The columnA is divided up into eighteen rectangular spaces by horizontal lines B, which rectangles are numbered consecutively from 1 to18. In the rectangle l is printed Yellow, in the seventh is printed Red, and in the thirteenth is printed .Blue. Between 1 and 7 are arranged the principal secondary colors formed by mixing yellow and red in varying proportions. These colors are arranged in rational order, theone containing the largest per cent. of yellow standing next toyellow. Between 7 and 13 are arranged in rational order the colors obtained by mixing red and blue, and after 13 comes the colors obtained by mixing blue and yellow. It is'obvious that the numberof secondary colors,of which the table contains fifteen, could be increased by interpolating between the different colors in the are the names of the colors which stand below Redin the column A. Now yellow can be mixed with each bf the colors which stand at the head of the first five columns. to pro- These new tertiary colors are denoted by two dots; but as no brokeu duce tertiary colors.

color would result from the mixture of yellow with the colors which head the next six columns only secondary colors would result. No dots are placed in the rectangles standing next below. A new tertiary color would result from mixing the next color below yellow (orange yellow) with each of the colors standing at the heads of the columns DJ. The same thingis true of all of the colors standing above Red. But real can only be mixed with the colors heading the last five columns to form tertiary colors. This is true also of all colors standing above Blue, which exhausts the series of possible combinations forming tertiary colors. To obtain a scale of tertiary colors the members of which would differ from each other by less than the members of the series constructed as above described,itwould only be necessary to form a larger number of secondary colors between each pair of primaries and then mix them in pairs in the same manner as before to form tertiary colors.

After forming the series of tertiary colors blue and forming the principal secondary colors by mixing them in pairs, and then taking each of said Secondary colors in turn and mixing it with the primarylacking in the said secondary color taken and with ei'ery other secondary color which contains said lacking primary, substantially as described;

2. In a color-chart, a graduated series of colored figures comprising. the secondary colors which can be formed by mixing in pairs the three primary colors, yellow, blue and red and the principal, tertiary colors formed by.mixing in pairs the said secondary colors, substantially as described.

3. In a color-chart, a series of colored fig ures arranged in rational sequence and comondary color taken, and with every other secondary color which contains said lacking primary, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- HGSSGS.

CHARLES J. J ORGENSEN. Witnesses:

BENNETT S; JONES, F. L. OURAND. 

